EP0332289B1 - Verfahren zur Herstellung von Monoolefinen durch katalytische oxidative Dehydrierung von gasförmigen paraffinischen Kohlenwasserstoffen, die zwei oder mehr Kohlenstoffatome enthalten - Google Patents

Verfahren zur Herstellung von Monoolefinen durch katalytische oxidative Dehydrierung von gasförmigen paraffinischen Kohlenwasserstoffen, die zwei oder mehr Kohlenstoffatome enthalten Download PDF

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Publication number
EP0332289B1
EP0332289B1 EP89301027A EP89301027A EP0332289B1 EP 0332289 B1 EP0332289 B1 EP 0332289B1 EP 89301027 A EP89301027 A EP 89301027A EP 89301027 A EP89301027 A EP 89301027A EP 0332289 B1 EP0332289 B1 EP 0332289B1
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EP
European Patent Office
Prior art keywords
process according
catalyst
mixture
oxygen
platinum
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP89301027A
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English (en)
French (fr)
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EP0332289A3 (en
EP0332289A2 (de
Inventor
Josephus Johannes Helena Maria Font Freide
Mark Julian Howard
Trevor Alan Lomas
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BP PLC
PetroIneos Europe Ltd
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BP PLC
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Publication of EP0332289A3 publication Critical patent/EP0332289A3/en
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Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C5/00—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms
    • C07C5/42—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor
    • C07C5/48—Preparation of hydrocarbons from hydrocarbons containing the same number of carbon atoms by dehydrogenation with a hydrogen acceptor with oxygen as an acceptor
    • C—CHEMISTRY; METALLURGY
    • C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/20—C2-C4 olefins
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P20/00—Technologies relating to chemical industry
    • Y02P20/50—Improvements relating to the production of bulk chemicals
    • Y02P20/52—Improvements relating to the production of bulk chemicals using catalysts, e.g. selective catalysts

Definitions

  • the present invention relates in general to the production of mono-olefins by the catalytic oxidative dehydrogenation of gaseous paraffinic hydrocarbons having 2 or more carbon atoms and in particular to the production of mono-olefins by the catalytic oxidative dehydrogenation of ethane, propane and butanes.
  • EP-A-0189282 discloses the use of a tin/phosphorus oxide catalyst in the production of mono-olefins from ethane, propane or butane in admixture with oxygen. Although reaction temperatures in the range 200 to 700°C are disclosed, the working embodiment uses a temperature of only 550°C.
  • US-A-3670044 discloses a process for the dehydrogenation of alkanes, cycloalkanes and arylalkanes wherein the hydrocarbons are mixed with gaseous hydrogen or gaseous hydrogen and oxygen and contacted with a catalyst composition comprising a Group VIII metal.
  • the process of the US document requires a hydrocarbon/gaseous oxygen mixture of 1 to 30 moles of oxygen per 100 moles of dehydrogenatable compound.
  • a desirable objective would be to convert ethane, propane or butanes in a single step to mono-olefins.
  • EP-A-0178853 discloses a process for the preparation of synthesis gas (carbon monoxide and hydrogen) from a hydrocarbon feed wherein the saturated hydrocarbon and an oxygen-containing gas are introduced in a ratio of 1.1 to 5 times the stoichiometric ratio of hydrocarbon to oxygen for complete combustion. The process does not require a catalyst for operation.
  • the present invention provides a process for the production of a mono-olefin from a gaseous paraffinic hydrocarbon having at least two carbon atoms or a mixture thereof which process comprises partially combusting a mixture of the hydrocarbon(s) and a molecular oxygen-containing gas in a composition of from 5 to 9 times the stoichiometric ratio of hydrocarbon to molecular oxygen containing gas for complete combustion to carbon dioxide and water, in contact with a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability.
  • gaseous paraffinic hydrocarbon there may suitably be used either ethane, propane or a butane, or a mixture of two or more thereof.
  • a suitable feedstock hydrocarbon is a mixture of gaseous paraffinic hydrocarbons, principally comprising ethane resulting from the separation of methane from natural gas.
  • the molecular oxygen-containing gas there may suitably be used either oxygen or air. It is preferred to use oxygen, optionally diluted with an inert gas, for example nitrogen. It is preferred to pre-mix the oxygen-containing gas and the paraffinic hydrocarbon prior to contact with the catalyst. Additionally, other feed components may be included if so desired to optimise process design. Examples of other suitable feed components include methane, hydrogen, carbon monoxide, carbon dioxide and water.
  • composition of the gaseous paraffinic hydrocarbon/molecular oxygen-containing gas mixture is from 5.0 to 9.0 times the stoichiometric ratio of hydrocarbon to oxygen for complete combustion to carbon dioxide and water, but these limits are extendible if desired.
  • commercial reactors would be operated at pressures of approximately 1-5 bar above atmospheric.
  • a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability is employed.
  • Suitable catalysts comprise supported platinum group metals and mixtures thereof, for example supported platinum or palladium.
  • a range of support materials may be used, it is preferred to use an alumina as the support.
  • the support material may be in the form of spheres or other granular shapes, but is preferably in the form of a monolith.
  • Monoliths are continuous multichannel ceramic structures, frequently of a honeycomb appearance. They are commercially available as similar materials are commonly used as catalytic convertors in automobile exhausts.
  • a preferred form of alumina-supported platinum catalyst is platinum/gamma-alumina spheres.
  • a more preferred form of supported platinum catalyst is a platinum/monolith, for example a platinum/cordierite or mullite monolith.
  • Cordierite has a material composition of 2 Mg0.2Al203.5Si02 whilst mullite has a material composition of 3Al2O3 2SiO2.
  • the catalyst may suitably be prepared by impregnating the support with a solution of a soluble compound of the platinum group metal.
  • a monolith catalyst this may suitably be achieved by soaking the monolith in a solution of a soluble compound, for example a salt, of the metal, removing the monolith from the solution and drying, typically at about 120°C.
  • a soluble compound for example a salt
  • metal loadings greater than about 0.15% metal loadings. Although such a metal loading is adequate for the performance of the invention, in certain circumstances higher loadings may be desirable. A higher loading may be achieved by wash coating the monolith prior to immersion in the solution of the catalytic metal compound with a material, for example alumina, capable of facilitating the retention of the metal compound.
  • a combustion catalyst in the form of a metallic gauze such as Pt/Rh may also be employed.
  • the catalyst in the form of spheres may be used as a solids recirculating bed, for example a fluid bed or a spouted bed.
  • a process for producing synthesis gas, i.e. carbon monoxide/hydrogen mixtures, from a reaction mixture comprising a saturated hydrocarbon and an oxygen-containing gas in a spouted bed, the bed comprising material which is catalytically active for steam reforming reactions, is described in our copending EP-A-0164864.
  • the process described in EP-A-0164864, which is incorporated by reference herein, may be modified by the use of a catalyst capable of supporting combustion beyond the normal fuel rich limit of flammability, for example a supported platinum group metal(s) as hereinbefore described, instead of the steam reforming catalyst and the conditions modified in accordance with the process of the present invention to produce a mono-olefin as the principal product of the process.
  • hydrogen is co-fed to the process as described in our copending EP-A-0178853 which is also incorporated by reference herein.
  • the catalyst in a fixed bed.
  • One reason for this preference is that it largely avoids the attrition problems generally encountered in moving bed operations.
  • Monolith catalysts are preferred over other forms of fixed bed catalyst because (1) they are capable of sustaining a very low pressure drop along the bed, thereby allowing large gas throughputs, (2) they present a high surface area to the gaseous combustion mixture, (3) they are particularly free from attrition problems, (4) they can result in very low levels of soot formation and as a result require less frequent de-coking and (5) they are available in various cell sizes and shapes and their preparation by the soaking technique is relatively simple.
  • the elevated temperature employed in the process of the invention may suitably be in the range from 500 to 1200°C, though temperatures in the upper part of this range, for example 800 to 1000°C are preferred.
  • the present invention provides a process for the production of ethylene from ethane which process comprises contacting a mixture comprising ethane and oxygen in an ethane to oxygen molar ratio of 1.7 to 2.1 with a platinum- or palladium-containing monolith fixed bed catalyst.
  • a cordierite monolith (ex CORNING) was soaked in a solution of [(NH3)4Pt]Cl2.H20. After 2 weeks the Pt impregnated monolith was removed from the solution, allowed to drain and dried in air at 120°C.
  • the platinum loading, as determined by X-ray Fluorescence Spectroscopy was about 0.1% w/w.
  • the Pt-loaded monolith (approximately 38 mm diameter x 51 mm length) was placed at the bottom of a quartz, 51 mm diameter, reactor with a baffle placed beneath it.
  • the baffle ensured that the incoming flow of feed gas became evenly distributed through all cells in the monolith.
  • Ethane, oxygen, hydrogen and nitrogen were passed through the monolith catalyst at atmospheric pressure. No preheat of the feed gases was required to effect autothermal operation, substantial heat generation being provided by the highly exothermic combustion of hydrogen/oxygen. Details of the molar proportions of the feed, the flow rates and the results obtained are given in Table 1.
  • paraffinic feedstock ethane, propane or butane, or mixtures thereof
  • oxygen and nitrogen over the catalyst in the proportions and under the conditions shown in the following tables (3-4).
  • Methane and hydrogen were also co-fed in some experiments.
  • the tables also show the experimental results, in which selectivities have been calculated on a soot free basis. Minimal soot formation was observed.
  • the monolith or gauze was placed in a quartz reactor (25 mm diameter) and the catalyst was supported on a course silica disc.
  • Tables 7 to 9 also show experimental results in which selectivities have been calculated on a soot-free basis. No soot formation was observed.

Claims (17)

  1. Verfahren zur Herstellung eines Monoolefins aus einem gasförmigen paraffinischen Kohlenwasserstoff mit wenigstens zwei Kohlenstoffatomen oder einer Mischung davon, das die partielle Verbrennung einer Mischung des Kohlenwasserstoffs (der Kohlenwasserstoffe) und eines molekularen Sauerstoff enthaltenden Gases in einer Zusammensetzung vom 5- bis 9- fachen stöchiometrischen Verhältnis von Kohlenwasserstoff zum molekularen Sauerstoff enthaltenden Gas, das zur vollständigen Verbrennung zu Kohlendioxid und Wasser notwendig wäre, im Kontakt mit einem Katalysator, der zur Unterstützung der Verbrennung über die normale kraftstoffreiche Flammbarkeitsgrenze hinaus fähig ist, umfasst.
  2. Verfahren nach Anspruch 1, wobei der Katalysator ein trägergestütztes Metall aus der Platingruppe oder eine Mischung daraus ist.
  3. Verfahren entweder nach Anspruch 1 oder Anspruch 2, wobei das Metall aus der Platingruppe entweder Platin oder Palladium ist.
  4. Verfahren entweder nach Anspruch 2 oder Anspruch 3, wobei der Träger ein Aluminiumoxid ist.
  5. Verfahren nach Anspruch 2 oder Anspruch 3, wobei der Träger ein Monolith ist.
  6. Verfahren nach Anspruch 2, wobei der Katalysator aus Platin/Gamma-Aluminiumoxid-Kugeln besteht.
  7. Verfahren nach Anspruch 2, wobei der Katalysator ein Platin/Cordierit-Monolith ist.
  8. Verfahren nach Anspruch 5, wobei der Katalysator ein Platin/Mullit-Monolith ist.
  9. Verfahren nach einem der Ansprüche 1 bis 3, wobei der Katalysator aus einer metallischen Gaze besteht, die ein Metall aus der Platingruppe enthält.
  10. Verfahren nach einem der vorhergehenden Ansprüche, wobei der gasförmige paraffinische Kohlenwasserstoff Ethan, Propan, Butan oder eine Mischung davon ist.
  11. Verfahren nach einem der vorhergehenden Ansprüche, wobei das molekularen Sauerstoff enthaltende Gas Sauerstoff ist.
  12. Verfahren nach einem der vorhergehenden Ansprüche, wobei die stündliche Raumgeschwindigkeit des Gases wenigstens 80 000 h⁻¹ beträgt.
  13. Verfahren nach einem der vorhergehenden Ansprüche, wobei Wasserstoff mit eingespeist wird.
  14. Verfahren nach einem der vorhergehenden Ansprüche, wobei der Katalysator in Festbettform vorliegt.
  15. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Mischung bei einer Temperatur im Bereich von 500 bis 1200 °C teilweise verbrannt wird.
  16. Verfahren nach Anspruch 15, wobei die Temperatur im Bereich zwischen 800 und 1200 °C liegt.
  17. Verfahren nach Ansprüchen 3, 5 und 14, wobei eine Ethan und Sauerstoff umfassende Mischung mit einem molaren Verhältnis von Ethan zu Sauerstoff von 1.7 bis 2.1 mit dem Katalysator in Kontakt gebracht wird.
EP89301027A 1988-03-08 1989-02-02 Verfahren zur Herstellung von Monoolefinen durch katalytische oxidative Dehydrierung von gasförmigen paraffinischen Kohlenwasserstoffen, die zwei oder mehr Kohlenstoffatome enthalten Expired - Lifetime EP0332289B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8805447 1988-03-08
GB888805447A GB8805447D0 (en) 1988-03-08 1988-03-08 Chemical process

Publications (3)

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EP0332289A2 EP0332289A2 (de) 1989-09-13
EP0332289A3 EP0332289A3 (en) 1990-09-19
EP0332289B1 true EP0332289B1 (de) 1995-03-29

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US (2) US4940826A (de)
EP (1) EP0332289B1 (de)
JP (1) JP2516676B2 (de)
CN (1) CN1026100C (de)
AU (1) AU615720B2 (de)
CA (1) CA1316946C (de)
DE (1) DE68921907T2 (de)
GB (1) GB8805447D0 (de)
MY (1) MY104970A (de)
NO (1) NO179140C (de)
NZ (1) NZ227922A (de)
ZA (1) ZA891729B (de)

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CN112266419B (zh) * 2020-10-29 2023-02-03 中国科学院微生物研究所 一种人工合成的抗除草剂蛋白

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7518027B2 (en) 2002-02-09 2009-04-14 Innovene Europe Limited Production of olefins
US7244872B2 (en) 2002-02-22 2007-07-17 Ineos Europe Limited Production of olefins

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AU2970489A (en) 1989-09-14
CN1026100C (zh) 1994-10-05
US4940826A (en) 1990-07-10
JPH01272534A (ja) 1989-10-31
NO890862D0 (no) 1989-03-01
DE68921907D1 (de) 1995-05-04
CA1316946C (en) 1993-04-27
CN1038271A (zh) 1989-12-27
DE68921907T2 (de) 1995-09-28
NO179140B (no) 1996-05-06
MY104970A (en) 1994-07-30
NO890862L (no) 1989-09-11
EP0332289A3 (en) 1990-09-19
NZ227922A (en) 1990-01-29
EP0332289A2 (de) 1989-09-13
NO179140C (no) 1996-08-14
GB8805447D0 (en) 1988-04-07
US5105052A (en) 1992-04-14
AU615720B2 (en) 1991-10-10
JP2516676B2 (ja) 1996-07-24
ZA891729B (en) 1990-11-28

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